ST ST10F276E - Figure 53. Block Diagram of Port8 Pins 3

Parallel ports UM0404
176/564 DocID13284 Rev 2
Figure 53. Block diagram of Port8 pins 3...0
P8.y
Open Drain
Latch
Write ODP8.y
Read ODP8.y
Direction
Latch
Write DP8.y
Read DP8.y
Port Output
Latch
Write P8.y
Read P8.y
MUX
1
0
MUX
1
0
Open Drain
Latch
Write XODP8.y
Read XODP8.y
Direction
Latch
Write XDP8.y
Read XDP8.y
Port Output
Latch
Write XP8.y
Read XP8.y
EXOR
XPOUTy
Data Output
Output
Buffer
Input
Latch
Clock
XPERCON.6
(XPWMEN)
CCzIO
Data Input
I
n
t
e
r
n
a
l
B
u
s
I
n
t
e
r
n
a
l
X
b
u
s
= 1
(y = 3 ... 0)
MUX
0
1
MUX
0
1
MUX
1
0
≥ 1
CCzIO
Data Output
Compare Trigger
(z = 19 ... 16)
CCzIO
Latch Data Input